| Oriental Times Media Corp (002175) SHE - Shenzhen Stock Exchange | |
| Ogawa Smart Healthcare Techn Grp Co Ltd (002614) SHE - Shenzhen Stock Exchange | |
| OL GROUPE NV (OLGNV) EPA - Paris NYSE Euronext | |
| OROLIA (ALORT) EPA - Paris NYSE Euronext | |
| OSE PHARMA (OSE) EPA - Paris NYSE Euronext | |
| OSSIAM ETF CAPE EU (CAPE) EPA - Paris NYSE Euronext | |
| OSSIAM ETF CAPE US (CAPU) EPA - Paris NYSE Euronext | |
| Oceasoft SA (ALOCA) EPA - Paris NYSE Euronext | |
| Origin Property PCL (ORI) BKK - Stock Exchange of Thailand | |
| OZICS HOLDINGS LTD (OZ9) ETR - Deutsche Börse XETRA | |
| OGI Group Ltd (MUS) ASX - Australian Securities Exchange | |
| OGI Group Ltd (OGIDD) ASX - Australian Securities Exchange | |
| Omni Market Tide Ltd (OMT) ASX - Australian Securities Exchange | |
| Oneall International Ltd (1AL) ASX - Australian Securities Exchange | |
| Onterran Ltd (OTR) ASX - Australian Securities Exchange | |